Research Report
Copyright ©2014 Baishideng Publishing Group Co.
World J Gastroenterol. Apr 21, 2014; 20(15): 4401-4406
Published online Apr 21, 2014. doi: 10.3748/wjg.v20.i15.4401
Table 1 Age and sex n (%)
AgeMaleFemaleTotalP value
Age Group
≤ 4091 (4.33)122 (5.81)213 (10.14)
40-49196 (9.33)136 (6.48)332 (15.81)
50-59412 (19.62)181 (8.62)593 (28.24)
≥ 60716 (34.10)246 (11.71)962 (45.81)< 0.001
Number of periods
1994-1999278 (13.24)106 (5.05)384 (18.29)
2000-2005407 (19.38)216 (10.29)623 (29.67)
2006-2013730 (34.76)363 (17.29)1093 (52.05)0.056
Total1415 (67.38)685 (32.62)2100 (100)
Mean ± SD age (yr)58.69 ± 11.3453.49 ± 13.7357.00 ± 12.41
Mean age of periods
1994-199958.97 ± 10.8753.99 ± 14.1457.59 ± 12.05
2000-200558.08 ± 11.8451.78 ± 13.7255.90 ± 12.87
2006-201358.93 ± 11.2354.36 ± 13.5657.41 ± 12.24